Should safety valves in the project comply with European standards or American standards?
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I referred to the drawings of a domestic project at my workplace and found that the standards for equipment flanges and fittings followed the American Class standard, while the safety valves adhered to the European PN standard. I’m not quite sure why it was designed this way Since they are all American standards, why do you choose the European standard for your boxing techniques? Is it the owner’s requirement, or is it because EU-standard safety valves are easier to purchase in this industry? I seek advice from all the experts here!
Since the pipe fitting standards follow the American standard Class, they are generally purchased in accordance with this standard. It might be impossible to obtain US standards due to procurement reasons.
Can American-standard flanges be matched with European-standard flanges?
Obviously, it’s not suitable; the pressure ratings are basically different.
Could it be because the safety valve needs to be calibrated? ? ? Those guys are tough to deal with.
If the equipment flanges are chosen to meet American standards while the safety valves are selected according to European standards, they certainly won’t be compatible with each other.
It depends on the customer’s requirements; purchasing flanges that meet US or EU standards is quite easy
I might not have expressed myself clearly here. That’s right; all the flanges used in this equipment are of American standard. Only the equipment flanges at the safety valve ports use European standards, and European-standard safety valves are employed. I mean, why is the equipment flange at the safety valve outlet also designed to meet American standards? Why choose American-standard safety valves?
I think for devices equipped with safety attachments and instruments, there’s no need to be too rigid; it’s sufficient to meet the standard requirements based on the properties of the medium. This is an issue related to the overall setup. Just like devices such as sight glasses, manholes, and handholes. Is there a big difference between DN500 and DN500(A)? Obviously not. Unless the customer insists strongly, there’s no way to make exceptions; it’s all based on the customer’s requests. Sometimes, the customer’s demands take precedence over standards. Of course, it’s a bit of a joke